html, body {
    margin: 0;
    padding: 0;
}

#clock {
    position: absolute;
    width: 600px;
    height: 600px;
    margin: auto;
    left: 50%;
    top: 50%;
    margin-left: -300px;
    margin-top: -300px;
    background: url("images/clockface.jpg") no-repeat;
    list-style: none;
}

#sec, #min, #hour {
    position: absolute;
    width: 30px;
    height: 600px;
    top: 0;
    left: 285px;
}

#sec {
    background: url("images/sechand.png") no-repeat;
    z-index: 3;
}

#min {
    background: url("images/minhand.png") no-repeat;
    z-index: 2;
}

#hour {
    background: url("images/hourhand.png") no-repeat;
    z-index: 1;
}